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Finding the Fourth Proportional to 219,620.01, 303,108.12 and 139,055.01

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Solution

The fourth proportional to 219,620.01, 303,108.12 and 139,055.01 is: 191,916.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,620.01 : 303,108.12 = 139,055.01 : x
  2. Step 2: Convert to fraction form
    219,620.01/303,108.12 = 139,055.01/x
  3. Step 3: Cross multiply
    219,620.01x = 303,108.12 × 139,055.01
  4. Step 4: Simplify right side
    219,620.01x = 42,148,702,657.68
  5. Step 5: Solve for x
    x = 42,148,702,657.68/219,620.01
  6. Step 6: Final answer
    x = 191,916.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.